Question

find the rationalising factor of 1/3√5 and 1/√12​

Answer 1

$\frac{1}{3 \sqrt{5} } \\ \frac{1}{3 \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } \\ \frac{ \sqrt{5} }{15}$

$\frac{1}{ \sqrt{12} } \\ \frac{1}{ \sqrt{12} } \times \frac{ \sqrt{12} }{ \sqrt{12} } \\ \frac{ \sqrt{12} }{12}$

$the \: rationalising \: factor \: of \: \frac{1}{3 \sqrt{5} } \: is \: \sqrt{5} \\ and \: the \: rationalising \: factor \: of \: \frac{1}{ \sqrt{12} } is \: \sqrt{12}$

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